I checked the star's position in VSD, the comparison star database (this is not a VSX issue since the comparison star is not variable), and it is given as 18 32 33.36 +37 48 00.0, so it is okay. However, as you say, in the photometry table the DEC appears as +37 47 60.0 (the non-rounded values is given as 37.79999924 so there may be a problem with rounding).
We need to look further into the question but in the meantime I have updated the position using UCAC3 coordinates that are +37 47 59.9 for the declination so the problem is solved (in this particular case).

The comp 105 is plotted at the right edge of the chart. It is the star plotted above the W symbol. The problem is that, being at the edge, the magnitude label ended up outside the chart.
That should be something the software could manage I think (I mean, always including labels inside of the chart), but it seems to doesn't do it.
You can even barely see part of the "1" below and to the right of the star.

About the 137 comparison for W Eri with the DEC second problem I had to change 08 00.0 to 07 59.9 even when the position was 08 00.0 in all catalogues. It is not a meaningful difference at the level of precision we work on but I hope we can solve this problem the correct way in the near future.